Mounted a Athlon Midas to the AR10 6.5CM 1000 yards was easy to get to. Today I added a 20 MOA rail and doing research on how to develop a 147gr 6.5 CR to make it to the 1500 yard mark. Anyone have insight or knowledge. I have a few boxes of Hornady ELD 147gr looking for powder suggestions and ammounts for the AR10.